3.27 gear for high-hp applications?

[LTHL VNM]

I'm putting a new setup on my car in the coming months, all in anticipation for TX2k10 in Houston, this will be my 5th year attending the week long event and have been doing some thinking. since the majority of the action is on the streets, what are ya'lls thoughts on going to a 3.27 rear end gear. I'm gonna go with a KB @19psi with a shot of nitrous....am i wrong in thinking that the car will be more controlled on the hit when the 800ft/lbs hit?

 

[Ls1z28-00]

probley so but if you cant hook i would work on suspension and tires before i put a higher gear in it. Putting an automatic in it would also be a good idea on a fast car.

 

[LTHL VNM]

no auto for me......main reason for this is to really be able to use every gear optimally
anyone?

 

[KILRSVT]

well with 327 you will lose some of that quick climb of the rpm's the taller gears will make every gear "longer"...it will increase your mph and your gas mileage as well.. but i think the stock 3.55 are pretty good for your set up...maybe some good sticky tires would be the way to go.

 

[cobracide]

Hmmm.. unless your doing some top speed runs, why bother? Learn to throttle the gas instead of flooring it and spinning the tires. A balance of horsepower and traction, yes?

 

[evil04svtcobra]

i think this is a good call...

if your going to be making 750rwhp and 800ish tq the 3.27 gears will be great. i would do the same thing if i was you.

 

[LTHL VNM]

Hmmm.. unless your doing some top speed runs, why bother? Learn to throttle the gas instead of flooring it and spinning the tires. A balance of horsepower and traction, yes?

it's hard to peddle a nitrous/blower car.......

my thoughts are that if i'm spraying the blower and it comes on at WOT when i lay into it at 3k rpm, with a 3.27 gear i'm not gonna be shocking the rear as hard and i'll be able to start in 2nd from most roll starts on the highway. and then at the track, i'm gonna be laying the same power down, if not more, but not have traction issues and my gears will be longer.

 

[cobracide]

it's hard to peddle a nitrous/blower car.......

my thoughts are that if i'm spraying the blower and it comes on at WOT when i lay into it at 3k rpm, with a 3.27 gear i'm not gonna be shocking the rear as hard and i'll be able to start in 2nd from most roll starts on the highway. and then at the track, i'm gonna be laying the same power down, if not more, but not have traction issues and my gears will be longer.

Sounds like a good idea and sound logic - give it a try.

 

[Venimus03]

I think 3.55's and 28's would work best for your set up. I've know a few people with high hp setup's and the 3.55's worked great.

 

[NVR_LFT]

3.27's all the way, if you have problems movin out in the lower rpm I know there is a bigger drill bit layin around somewhere for that nitrous port....

 

[68_GT]

makes sense to me

what's the TX2k10 ??

 

[Jills03]

it's hard to peddle a nitrous/blower car.......

my thoughts are that if i'm spraying the blower and it comes on at WOT when i lay into it at 3k rpm, with a 3.27 gear i'm not gonna be shocking the rear as hard and i'll be able to start in 2nd from most roll starts on the highway. and then at the track, i'm gonna be laying the same power down, if not more, but not have traction issues and my gears will be longer.

I have a 3.4 Whipple and a C4 and I put 3.27s in mine for the same reason. I'm still having some traction issues going from a dig on the street but I do think the gears helped.

 

[LTHL VNM]

makes sense to me

what's the TX2k10 ??

National Supra meet in Houston...happens every year in Houston around spring break. best street action you can find

 

[LTHL VNM]

crazy for me to believe that none of ya'll have done this.....oh well, looks like i'm throwin the 3.27 in next week

 

[cobracide]

Let us know how it works out - should kick ass with spray. Maybe a bit of a dog without spray (compared to other TS with 3.55 gears).

 

[s_x_i]

I stepped up my rear tire, I'm running M+H... can't remember the exact number off the top of my head, but it's close to a 28" DR. That helped a bunch.

 

[90goldtsiawd]

What about 3.31s? Didn't turbovnom have decent luck with them on his eaton car? It'd probably be less of a dog than the 3.27s?

 

[LTHL VNM]

Doubt it'd be much of a difference.
And I don't see a car making over 700ft/lbs being much of a dog, so I'm kinda confused....if you re-read my reasoning as to why I'm considering the swap, you'll see it's not for a 480rwhp setup. I guess we will see next week

 

[rufus5.0]

my friend just recently moved from 355 to 373 with 630 rwhp ran same et went 9mph faster in qtr i wouldnt switch if anything leave the 55s in

 

[LTHL VNM]

That much of an increase in mph with no ET improvement is likely wheelspin